RGB LED Strip
Theory of Color and RGB Lighting:
When the three primary colors (red, green and blue) of light are mixed, the intensities of the colored light is being added. The mixing of colored light is called additive color mixing and in a nutshell, this is the purpose of the RGB/W LED Controller. It mixes the three colors to create other colors by dimming. White light is perceived where all three additive primaries overlap. Since the white mixture results from the adding of three color light sources, the white light appears to be the brightest of all. By varying the intensities of the individual light sources, a full range of colors can be obtained.
The standard 5050 SMD has three color LEDs Red, Green and Blue. Although, New RGBW LED Flex Strip has Red, Green and Blue plus an additional color of Warm White (3000K) for improved color control and color mixing in various needs.