Can some "Dai Dai" answer me?!

I use "Tamiya" for spray can.  But, just curious, if I mix two different can of spray (ie. Mr. Color)..

Should I use "Mr. Color" as "Base" color first? Or should I use "Tamiya" spray can first as base?? Hmm...

Will someone be able to answer??  Thanks...

其實噴完一隻色乾左,再噴另一度色就冇問題.
但係點解要用兩種性質油呢?

兩隻牌子姐, 同一種性質的 (都係硝基油)

I know.. but, for some odd reason, I heard if I use Tamiya as base and use Mr. Color as the next color.. it'll "EAT" out the paint that's all...
(Or is it the other way around..)

So, just want to ask ask "C-Hing" about this question..

Also, can someone tell me about "金色"... How to avoid it to "Oxidized" problem.. *Very grey about this topic*

金屬氧化問題基本上冇得搞.

can apply a coat of clear spray to slow down the 金屬氧化  process? or will that reduce the effect of metallic paint???

I'm trying that for now...
I spray a clear coating on it.. and hopefully will see less of the 氧化... =X

Hopefully, it'll work.. if so, I'll fix my old models back with the gold.. =X