MAC Forever Green is a very warm-toned, medium-dark green with a pearl finish. It is a permanent eyeliner that retails for $16.00 and contains 0.04 oz.
MAC Forever Green Powerpoint Eye Pencil ($15.00 for 0.04 oz.) is described as an "olive green with shimmer." It's part of the permanent range (and has been for quite awhile--it's not new!). It's an olive green with a khaki-olive sheen and forest green micro-shimmer. In a single pass, it's so-so pigmented, but it does build up nicely after two passes. The color is a bit greener but still similar to Make Up For Ever #5L, shu uemura ME Khaki, and MAC Rosemary & Thyme.
Waterproof. Longwearing. Metallic, shimmer and matte finishes. Smooth to apply. Won't transfer, smudge, or budge... Draws the line: powers your eyes. Makes its point. Lasts.