form with backgroundimage and transparency problem when i show or hide a label.

Here is the code.
But its not a great solution..

I tried a few ideas but to no avail.
If you have found a way great - post your code so we can have a look

Thank you.
I tried your solution but it still blinks..So i deleted all the transparancy and it still didn't work. then i created a label outside the backgroundimage and that label didn't blink.
My guess is that the transparancy is not the problem but the backgroundimage is the problem
But when i delete the backgroundimage and use a regular image that i SendToBack and then use your solution there is no problem.
If  you have another idea please let me know cause i would like to use a image with more then one color as background.

Yes , I see what you mean
The best that i can come up with is changing forecolor of label eg:
//button1
label1.ForeColor = Color.Black; //etc
//button2
label1.ForeColor = Color.RoyalBlue;// or whatever the background image color is

here is the code