McLaren looks set to debut its Honda-powered 2015 car on Sunday with an all-black livery, according to the Spanish sports daily Marca.
This year's Red Bull is probably the last 100 per cent Adrian Newey car, team boss Christian Horner has admitted.
If aesthetics mean anything, Ferrari will have a better year in 2015.
Susie Wolff performed some aero test work and control systems testing and team completed planned testing programme on schedule this morning.
Overall the team was very pleased with the outcome of the day.
Sahara Force India completed its Barcelona test today with local boy Daniel Juncadella completing 91 laps in the VJM07.
A roundup of F1 briefs.
Mercedes and Mercedes power dominate times and mileage at the Bahrain International Circuit
Testing continues Thursday through Saturday.
Not the start to the second test of the year that Red Bull were hoping for.
After Red Bull's catastrophic opening test at Jerez last week, even F1 backmarkers Marussia and Caterham are currently ahead of the formerly-dominant world champions' game.
Something is going on with the Red Bull power plant.