Yep, those are the very capacitors that my Riff Raffs have in my SG :D
I wouldn't have been able to say that mine was overly bright before I installed them, but maybe someone else would have described it that way. I try these capacitors in guitars that don't seem to be breaking-up in the way I like... But my experience seems to suggest now that if it's a brighter sounding guitar, the Vitamin Qs can make an almost unbelievable improvement for me personally.
Also, if you haven't done it already, try adjusting the pickup heights. It affects all pickups, but seems really noticable with BKPs. You can make huge differences in the fine-tuning of "your" tone with small turns of the height adjuster screws either side of the pickup. A non-guitarist might not spot the difference, but you can make your guitar feel like a completely different guitar just by raising or lowering one or both sides of a pickup.
And welcome to the forum :D