Re: I know this aint just bugs, but I report it any way.
@solofargekla When you mention the pixels and a few other bits... I'm wondering if you have Mods/CC and if this may be affecting some things? If so, have you tried testing without the Mods/cc to see if the issues remain? Please click the spoiler tag for directions on doing this. You can test without saving to see if the issue(s) are caused by any or the Mods/CC:
Spoiler
Try moving the Mods folder from your "The Sims 4" folder [Documents > Electronic Arts > The Sims 4] to your desktop (save it for reference) and delete the localthumbcache.package file in your “The Sims 4” folder. Then check in a new game save to see if this issue is still occurring. You can test without saving in order to identify which CC/Mods are causing the issue, then remove or add updated version(s) of the Mod/CC causing the issue.
Also, I'm not sure if I'm following your issue correctly with the mood lamp. The lamp has to be purchased in the color you want, and the only ability to change colors that I see is the same option I see on other lights and candles in the home: Set Color and Intensity > This Light > Color: