A lot of people like to to design for them self, but they forget some important aspects needed for what your intentions are for the design project? If it is for a website or to be displayed on your monitor then you need to use RGB mode. RGB (red, green, and blue) refers to a system for representing the colors to be used on a computer display. Red, green, and blue can be combined in various proportions to obtain any color in the visible spectrum. Levels of R, G, and B can each range from 0 to 100 percent of full intensity. If you are designing for something to be printed, then you need to set your design up in CMYK mode. If you send a file to a print company designed in RGB mode, the colors will vary significantly when they print it out due to the file being converted to CMYK mode. The CMYK color model (process color, four color) is a subtractive color model, used in color printing, and is also used to describe the printing process itself. CMYK refers to the four inks used in color printing: cyan, magenta, yellow, and key (black). To save yourself frustrations and extra costs later, ask yourself what are my intentions when creating this design? Then check in your design program before you start designing if it is in RGB mode or CMYK mode? I hope this saves some time and costs in your next project.