It appears like there are 3 options:
15.6" FHD IPS
15.6" FHD 144Hz IPS
15.6" 4K IPS
--- if you select 144Hz - there is only 1 brand they use - So regardless their 144Hz panels will all look relatively the same.
-- will that have perfect color range? who knows, look for a review and that will give you a general idea of what to expect. However, 144Hz is 144Hz ( if it's not than it's false advertising ) ... if you've never had a 144Hz IPS panel before you probably won't notice if something is wrong with it, but, if you use a 144Hz for 6 months then go back to 60Hz you'll notice the difference (at least while gaming) ..
Different laptop makers have different suppliers for displays, some might use the same suppliers, others may not.