We are already aware of the popular RGB LED strips powered by SMD5050 chips and we noticed that were not efficient if we require warm, natural or cool white colours in any scenes created by colour mixing of the basic colours (Red/Green & Blue). For this reason RGB+W LED strips were introduced for some time now which include a separate white chip next to each RGB LED. That was better way for being able to create white colour mix but still since the chips of RGB and white used are two different LED chips the colour mixing is not so efficient but better that without the white chip. For this reason the RGBW 4 in 1 LED chip was produced and we do now have available LED Strips that is actually perfect and very efficient for this purpose. Note that it is also much brighter than using individual chips as every single chip has a brightness of approximately 20 lumens!
Also available in waterproof version as per image displayed here. Note that waterproof version can be manufactured with different ways the cheapest being using "epoxy resin" but in this way LED strip will deteriorate and become yellowish within the first 2 to 3 months of operation. Also using epoxy will result the product to become very hard and loose its flexibility and gradually in about 2 to 3 months to fail completely. This is what we get from manufacturers of cheap LED Strips, and for this reason I do only suggest using proper resin even if the cost is much higher.
Last comment will be about several qualities of LED chips available in the market, I would only select chips of high efficiency and with Ra>80 or even 90 in cases that purity of colour is very important. The highest efficiency LED chips available today for single colour LED strips is SMD2835 series which might reach up to 130Lm per watt.