  I think it would be a good idea to add a separate logo upload just for the welcome screen. The default user console logo is 000x00 and the default welcome screen logo is 000x000. In the current design, the user console logo is used for both. If you design your logo for one specific size, it may not look as good on in the other size. Also, you are dealing with two different color backgrounds.  When I use a larger logo(000x000) for the user console it is shrunk to fit the 000x00 requirements and is distorted. I am not sure