I do not typically recommend selecting a specific color pattern in a trademark applicaiton. Registration of a logo in black and white provides protection in all color patterns, regardless of the colors in use. Claiming colors for your design mark will make the mark stronger for that particular color pattern but it may decrease or inhibit your ability to stop infringers of your mark in a different color scheme. If you submit a color claim, then you must also submit a color drawing of your mark that matches the colors you are claiming.