Explore colors

Review Colors:
https://drive.google.com/open?id=0B6x7aGKr7ZY-eVZUeVVTTFpCRmc

This program is a simple Windows application which allows to explore .Net colors. The main window consists of two pages:

First page shows the list of all .Net colors (as described here: https://msdn.microsoft.com/en-us/library/system.drawing.color(v=vs.110).aspx) and their RGB values, and the second page is used for selecting custom color by assigning values for R, G and B channels by setting the values of corresponding up/down boxes.