[Philips, Sony, TCL Android TV] Redflea:
The differences in color are due to the different picture mode settings in the built-in Video app, and Kodi and Archos apps (and applies to MX player and likely other video players you may install as well). See below for the gory details, it's easy to fix.

The X850C stores separate picture settings (and sound settings also work this way) for each input and for three groupings of the Android apps on the Home screen. The separate Picture Mode settings and Sound Adjustment settings can be accessed from the Action menu and are grouped in this way:

- Apps

- Apps (Video)

- Apps (Photo)

- HDMI-1

- HDMI-2

- HDMI-3

- HDMI-4

- Component

When you go to the Picture Adjustments or Sound adjustments menus, (Action menu>Picture adjustments, Action menu>Sound adjustments) the menu will indicate at the top {below the "Picture Adjustments" or "Sound Adjusments" menu title) which settings you are viewing. See below - the PIcture adjustments menus for the HDMI1 input and for Netflix app (which is in the "Apps (Video)" category) are attached.

App categories: Sony assigns each app installed on the TV to one of three categories: 1) "Apps", 2) "Apps (Video)", and 3) "Apps (Photo)". (We don't have a listing that shows which apps are in which categorty.) When you change the settings for an app in a category, all apps in that category will use those settings. You can check the Picture adjustment menu in each app you use to confirm that you know which category it is in and what settings it is using.

Some video apps, e.g., Amazon, Netflix, Video, etc., are in the Apps (Video) group.

Others, e.g., Kodi, VLC, and Archos, MX Player, are in the "Apps" group for some reason, not the Apps (Video) group as it probably should be. Sony decides which apps go where.

If colors look off in Kodi, it may be that the picture settings for the "Apps" group Kodi is in are not set as you prefer.

First, launch the VIdeo app and select Action menu>Picture adjustments, and see which picture mode you have selected for the Apps (Video) group, and what settings you have in place.

Then, launch the Kodi app and select Action menu>Picture adjustments and select the same picture mode and make the same picture settings changes for that app group.

Then you will be comparing apples to apples. I've set the same settings across my Apps and Apps (Video) groups and see zero differences in the picture between them...If above isn't the issue then it's possible there is a video setting in Kodi that is causing you issues, but I'd suspect above first.

The recommended approach for Picture and Sound settings is:

1. Select the input or app you want to adjust settings for (and remember this applies to Sound settings as well!).

a. If it's an HDMI or other input, turn on the device on that input as well so you can see the picture as you are adjusting it.

b. If it's an app, just open the app, you don't have to start playing a video.

3. Select Action menu>Picture adjustments - you'll see the input name (e.g., HDMI1) or app group (e.g., Apps (Video)) listed at the top of the Picture adjustments menu

4. Make your changes and then exit the Picture adjustments menu. That's it.

That way you adjust the picture settings for desired input or app group.