Why does 360p video get rendered with BT.601 Color primaries, when 720p has BT.709?

I've found no way to have control over this except for the High10 profile Rec2020 color primaries option. 
But I'd like to have a way for them both to be rendered with the same color primaries.

I'm trying to test our software and there's a color difference in the videos, so I wanted to see if the color primaries are causing this

Attaching a picture where the 2 colours are compared (This is a picture taken from an Android device using our software)

Details for the 360p video

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 20 s 20 ms
Bit rate : 249 kb/s
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.036
Stream size : 609 KiB (62%)
Language : English
Encoded date : UTC 2019-11-18 14:39:37
Tagged date : UTC 2019-11-18 14:39:37
Color range : Limited
Color primaries : BT.601 NTSC
Transfer characteristics : BT.601
Matrix coefficients : BT.601
Codec configuration box : avcC

Details for the 720p video

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 20 s 20 ms
Bit rate : 1 001 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.036
Stream size : 2.39 MiB (82%)
Language : English
Encoded date : UTC 2019-11-18 14:41:28
Tagged date : UTC 2019-11-18 14:41:28
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC