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copied!<p>I took the relevant LESS code from Bootstrap's source to generate a <code>btn-purple</code> class. The gradient, etc are very similar to the default buttons. You just need to change <code>@backgroundColor</code> and <code>@backgroundColorHighlight</code> in the LESS code below to change the color.</p> <pre><code>// Gradient Bar Colors for buttons and alerts .gradientBar(@primaryColor, @secondaryColor, @textColor: #fff, @textShadow: 0 -1px 0 rgba(0,0,0,.25)) { color: @textColor; text-shadow: @textShadow; #gradient > .vertical(@primaryColor, @secondaryColor); border-color: @secondaryColor @secondaryColor darken(@secondaryColor, 15%); border-color: rgba(0,0,0,.1) rgba(0,0,0,.1) fadein(rgba(0,0,0,.1), 15%); } // Gradients #gradient { .horizontal(@startColor: #555, @endColor: #333) { background-color: @endColor; background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+ background-image: -webkit-gradient(linear, 0 0, 100% 0, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(left, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(left, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(to right, @startColor, @endColor); // Standard, IE10 background-repeat: repeat-x; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@startColor),argb(@endColor))); // IE9 and down } .vertical(@startColor: #555, @endColor: #333) { background-color: mix(@startColor, @endColor, 60%); background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+ background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(top, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(to bottom, @startColor, @endColor); // Standard, IE10 background-repeat: repeat-x; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down } .directional(@startColor: #555, @endColor: #333, @deg: 45deg) { background-color: @endColor; background-repeat: repeat-x; background-image: -moz-linear-gradient(@deg, @startColor, @endColor); // FF 3.6+ background-image: -webkit-linear-gradient(@deg, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(@deg, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(@deg, @startColor, @endColor); // Standard, IE10 } .horizontal-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) { background-color: mix(@midColor, @endColor, 80%); background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor)); background-image: -webkit-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: -moz-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: -o-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: linear-gradient(to right, @startColor, @midColor @colorStop, @endColor); background-repeat: no-repeat; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback } .vertical-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) { background-color: mix(@midColor, @endColor, 80%); background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor)); background-image: -webkit-linear-gradient(@startColor, @midColor @colorStop, @endColor); background-image: -moz-linear-gradient(top, @startColor, @midColor @colorStop, @endColor); background-image: -o-linear-gradient(@startColor, @midColor @colorStop, @endColor); background-image: linear-gradient(@startColor, @midColor @colorStop, @endColor); background-repeat: no-repeat; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback } .radial(@innerColor: #555, @outerColor: #333) { background-color: @outerColor; background-image: -webkit-gradient(radial, center center, 0, center center, 460, from(@innerColor), to(@outerColor)); background-image: -webkit-radial-gradient(circle, @innerColor, @outerColor); background-image: -moz-radial-gradient(circle, @innerColor, @outerColor); background-image: -o-radial-gradient(circle, @innerColor, @outerColor); background-repeat: no-repeat; } .striped(@color: #555, @angle: 45deg) { background-color: @color; background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent)); background-image: -webkit-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); background-image: -moz-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); background-image: -o-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); background-image: linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); } } // Reset filters for IE .reset-filter() { filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)")); } .buttonBackground(@startColor, @endColor, @textColor: #fff, @textShadow: 0 -1px 0 rgba(0,0,0,.25)) { // gradientBar will set the background to a pleasing blend of these, to support IE<=9 .gradientBar(@startColor, @endColor, @textColor, @textShadow); *background-color: @endColor; /* Darken IE7 buttons by default so they stand out more given they won't have borders */ .reset-filter(); // in these cases the gradient won't cover the background, so we override &:hover, &:focus, &:active, &.active, &.disabled, &[disabled] { color: @textColor; background-color: @endColor; *background-color: darken(@endColor, 5%); background-position: 0 -15px; } // IE 7 + 8 can't handle box-shadow to show active, so we darken a bit ourselves &:active, &.active { background-color: darken(@endColor, 10%) e("\9"); } } // Provide *some* extra contrast for those who can get it .btn-purple.active { color: rgba(255,255,255,.75); } // Set the backgrounds // ------------------------- @backgroundColor: lighten(#7a43b6, 10%); @backgroundColorHighlight: darken(#7a43b6, 5%); .btn-purple { .buttonBackground(@backgroundColor, @backgroundColorHighlight); } </code></pre>

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