Stupid question re: leaf color

[yellowcymbidium]

I've had a phal for 11 months and the leaf color in that time has remained fairly stable. Yesterday I noticed that all of the leaves have turned a paler green near their bases, and today the color difference is more pronounced. Does this mean the leaves are growing? Or is it indicative of a problem? I'm sorry this question is so basic, and I'm going to feel foolish if the answer is "they're growing", but I did look around a bit online for an answer to this question and I couldn't find anything that dealt with it directly.

[Daethen]

I would check the roots. I always worry when there is a noticable color change that fast. Take a look at what is in the pot. Have you repotted since you got it? No question is stupid except the unasked one!

[yellowcymbidium]

No I have not repotted it since I got it. Thanks for the tip!

[Daethen]

No problem, post an update. Let us know what you find and we will go from there.

[tangers40]

if it's the older leaves (lower on the plant) that are changing colors, it could indicate a problem. if it's the top leaf, that means it's growing (mine are always a really pale green at the base while they're in active growth, particularly if they're growing fast and the chlorophyll/other pigmentation hasn't had a chance to catch up yet).

[osairis.ali]

I have the same case... the top leaves looked pale green and show some black spots on their surface... the spots feel concave... is there any suggestion?