Use what the pros use—canvas drop cloths. They're not slippery and they absorb splatters (but still wipe up large spills or they can bleed through). "Unless you're painting a ceiling, you don't need a jumbo-size cloth that fills the entire room," a pro says. "A canvas cloth that's just a few feet wide and runs the length of the wall is ideal for protecting your floor, and it's easy to move."
When you move from room to room, consider your color story, or how the colors will interact. Using complementary colors - colors that sit opposite one another on the color wheel, will create a very dramatic look in your home. Choosing analogous colors, which sit beside one another on the color wheel, creates a more subtle appearance. Monochromatic looks can also be very effective in small spaces, when you choose varying shades of one color to give variety, but without definition.
Back to the article. You can add water to all latex based paints / thinner to oil based paint. The tinting base has absolutely nothing to do with it. Say you are working outside and throughout the day you have to add a little water to keep the same consistency. If somebody really tried to add 20% to 50% water they no longer would be painting they'd be performing a whitewash or pickle finish.
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