The Color & Alpha Panel is used to set color and alpha (transparency) on selected Map(s) and Map Point(s)

Using the Color & Alpha Panel
To set Map color, select the Map(s) in Map Panel or Output Window, then select the color or grayscale by clicking on the relative panel, or using the color sliders. To change Map alpha (transparency) use the rightmost alpha slider. 

Each Map Point can have its own color and alpha (transparency) value. 
Map Soft-Edge can be achieved by selecting the desired Map Points and adjusting the alpha (transparency).

First Row from Left to right: 

• White Color 100% Alpha (Original)

• Red Color, 100% Alpha

• Green Color, 100% Alpha

Second Row from left to right: 

• White Color 100% Alpha

• Soft Edge = 0% Alpha on outer bounding points, 

• Color Gradient, no Media