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diff --git a/‎src/components/colorbar/defaults.js
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+/**
+* Copyright 2012-2015, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+
+'use strict';
+
+var Axes = require('../../plots/cartesian/axes');
+var Lib = require('../../lib');
+
+var attributes = require('./attributes');
+
+
+module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
+    var colorbarOut = containerOut.colorbar = {},
+        colorbarIn = containerIn.colorbar || {};
+
+    function coerce(attr, dflt) {
+        return Lib.coerce(colorbarIn, colorbarOut, attributes, attr, dflt);
+    }
+
+    var thicknessmode = coerce('thicknessmode');
+    coerce('thickness', (thicknessmode === 'fraction') ?
+        30 / (layout.width - layout.margin.l - layout.margin.r) :
+        30
+    );
+
+    var lenmode = coerce('lenmode');
+    coerce('len', (lenmode === 'fraction') ?
+        1 :
+        layout.height - layout.margin.t - layout.margin.b
+    );
+
+    coerce('x');
+    coerce('xanchor');
+    coerce('xpad');
+    coerce('y');
+    coerce('yanchor');
+    coerce('ypad');
+    Lib.noneOrAll(colorbarIn, colorbarOut, ['x', 'y']);
+
+    coerce('outlinecolor');
+    coerce('outlinewidth');
+    coerce('bordercolor');
+    coerce('borderwidth');
+    coerce('bgcolor');
+
+    Axes.handleTickValueDefaults(colorbarIn, colorbarOut, coerce, 'linear');
+
+    Axes.handleTickDefaults(colorbarIn, colorbarOut, coerce, 'linear',
+        {outerTicks: false, font: layout.font, noHover: true});
+
+    coerce('title');
+    Lib.coerceFont(coerce, 'titlefont', layout.font);
+    coerce('titleside');
+};