There are several different methods to objectively assign colors to plant parts.  The one system that has endured for botanists and horticulturists is the RHS Colour Chart.

The Compleat Botanica uses the 884 colors of the Royal Horticultural Society's Colour Chart to record the colors of plant parts.  Even if you're not familiar with the system, its logical layout of hues and saturations can quickly be learned -- the drop-down lists display the colors on-screen for easy point-and-click assignment.

When filtering your records, the 884 colors are grouped into 29 related colors, (such as yellow, yellow-orange, orange, orange-red, red, red-purple, etc.) that make it easy to find and group specimen records by color.

As an alternative to using this formal system, you can also use popular color names.  Switching from RHS colors to popular color names is accomplished using the Customize settings . . . area.

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