Yeah, 4100K is on the blue-r spectrum so you'll be fine with those, but am I to understand you spent over $60 on 6 tubes?!

I still say take 'em back. Go to Lowe's or Menard's or Home Depot and get some regular shop lighting (T8s again, preferably) with a color spectrum above 3500k, but try to get the highest they have if you're only planning on vegging with these lights.