Reference: BLF A6 FET+7135 Light Troubleshooting and Mod thread
The reference link shows a couple of beam shots. However, tint is in the eye of the beholder. It is very context sensitive.
Personally, I ordered all three tints because (1) I couldn’t decide which tint to get and (2) because I felt the additional cost per flashlight was worth it. I ended up with one anodized (3D) and two bare aluminum (1A and 5A). While the 1A is clearly the brightest, it is the one that gets the least use. And while I like warm tints, I find that the 5A tint is a little overcooked. I tend to use the 3D tint the most.
As to how to switch mode groups, follow the instructions under “Link to text instructions” in the reference link, above. Note: When ordering the flashlight you do not have a choice of mode groups. Mode groups are user-selectable when you operate your flashlight. If you have any problems operating the flashlight or choosing modes, ask for assistance in the reference link.