The term I often see (and use) is "foolproof." (easy and not subject to human error). There are examples below that say "fool proof" but I think "foolproof" is better. You will also encounter "fool-proof" with makeup.

Please see the below websites:
http://www.beauty-and-makeup-tips.com/smoky-eye-makeup.html
A gorgeous smoky eye is also a tricky, more technical eye makeup style to pull off... well that is... the look is smoky but polished AND it often can look messy and trashy.
If you feel like you have to left thumbs, here you are, a step by step with diagrams...for a fool proof, high precision, well blended, professional looking application.
http://www.gabis.com/products.php?categoryid=50
--- "Color Me Beautiful" Book. It's fun. It's easy. It's fool proof. The celebrated Queen of Colour, Carole Jackson shows how her clear, detailed application techniques will bring out the beauty in you. Fully illustrated with vivid colour-true palattes and full-color photos showing right and wrong looks for each season.

http://lunadeapril.xanga.com/702235449/how-to-know-what-look...
--- To get a Fool proof Cheek color pinch your cheek hard and see what color it turns! then seek out a blush that color! then also try ones a little lighter and a little darker!
--- To find a Fool proof lip color, Bite your lip! then look at the color of your lips! Find a lipstick or gloss that color ( there is one trust me) then any shade a little lighter or darker will also work!
--- Dont know what colors will be fool proof and guaranteed to look good on you? well have no fear for Tiffany is here!! This Will work for Every single person under the sun.

http://ezinearticles.com/?10-Foolproof-Makeup-Tricks&id=3694...
10 Foolproof Makeup Tricks



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Note added at 23 mins (2010-11-08 13:00:38 GMT)
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"Foolproof color"

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Note added at 39 mins (2010-11-08 13:16:37 GMT)
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Here are a couple more examples (using fool-proof & foolproof):
http://www.stilacosmetics.com/product_detail.asp?PMID=304
cheek color pan
Brighten and define your cheeks with Stila's fool-proof cheek color. Apply these sheer, easy-to-wear shades for a touch of soft color or layer it for the desired intensity. Blushing has never been so easy!

http://littlemissmakeup.com/blog/makeup-2009/summer-makeup-l...
For a flattering nude look, earthy tones of bronze, brown and chocolate, and ochre, gold, beige and cream are great for naturally enhancing brown, blue or green eyes. These are foolproof colors that work well for blondes, redheads and brunettes.