The future may well be orange but, if Holland's involvement in this World Cup is to extend beyond Friday's quarter-final with Brazil, Bert Van Marwijk and Ronnie de Boer's twin brother are going to have to get more out of their team.
Holland have now won four games without really raising a sweat but they will surely have to move up a gear or two when they next get their working clothes on.
Are they capable of doing so on demand or will their reluctance to go for it in their previous games leave them struggling to put the foot to the floor when they have to produce that wee bit extra? Its reasonable to assume Brazil will demand a bit more of the Dutch than Denmark, Japan, Cameroon or Slovakia have done so questions are sure to be asked and answered.
But Brazil too have coasted through to the last eight without being seriously tested. They have, however, had five/ten minute spells at various times in their games when they have stepped up the pace and shown awesome qualities. If they produce this ominous power for more prolonged periods, Holland face a very torrid time on Friday.
On a more positive note for the Dutch, Arjen Robben made his first start in this World Cup after drifting in and out of the opening games as a sub. His trademark cut inside onto his left foot fired Holland into the lead after 17 minutes and I wondered if this would be the day the Oranjemen cut loose. They had plenty of chances to put Slovakia out of their misery before half-time but, as always, with the score stuck at 1-0, the underdogs were still in with a chance.
The victory over Italy can't have done Slovak confidence any harm at all and coach Vladimir Weiss clearly reinforced the point at the interval. They began to creep back into the game, Dutch keeper Maarten Stekelenburg was suddenly called upon to earn his bonus money, although he really shouldn't have had a chance when Robert Vittek shot straight at him with the whole goal gaping.
But just when Slovakia were looking at their most dangerous, Wesley Sneijder delivered the killer blow with six minutes left. With goalkeeper Jan Mucha having nipped down the road for a pint, Dirk Kuyt found himself in acres of space on the left and he calmly set up Sneijder who shot into the empty net. A late penalty kick from Vittek reduced the deficit but there was no way back for the Slovaks.
No doubt Dutch eyes were glued to the TV screen a few hours later when Brazil met Chile for the right to play in Friday's quarter-final. I felt the Chileans had to score first to have a chance and they started impressively enough but two goals in a three minute spell towards the end of the first half - a classic Juan header from a well flighted corner kick and a neat passing link-up which beat the offside trap to send Luis Fabiano clean through - made the outcome oh so predictable.
To Chile's great credit they kept at it, even after Robinho had made it 3-0, and every non-Brazilian in the world was surely hoping they'd get the consolation goal they deserved. But you don't get to win five World Cups by giving away freebies and, while their predecessors had to overcome the suspicion that they were a bit ropey defensively, this team doesn't mess about at the back. Julio Cesar, Maicon and Lucio won their stripes with Inter Milan in the Champions League, which might give Bayern Munich's Arjen Robben and Mark van Bommel added motivation later this week.
Brazil v Holland has all the makings of a cracking tie, as does Germany v Argentina, and I'm growing more and more expectant of some classic football to come. The quater-final line-up will be completed tomorrow and I feel we might get our first taste of the dreaded penalty kick shoot-out. I find both games hard to call, possibly just preferring Japan and Spain to edge through, bit I wouldn't be the least bit surprised if I was proved wrong.
Tomorrow: Paraguay v Japan, Spain v Portugal