Plant what looks good in front of the house with the color it is at that point. If you have something portable that is the same color as the house, take that to the nursery and hold it up against plants there to see what clicks. When you are looking away from the house, out into the yard it doesn't necessarily have to coordinate with the house. Pick a spot from which each section is going to be seen and play to that, rather than trying to make everything look terrific from all angles.

Doesn't look awfully bold at all! Kind of a Renaissance scheme... I think I'd like some dark spreading evergreens here (can you hide the concrete edge with these? Or, can you face the concrete with red brick?) A deep red rose near the house sounds nice. Something with dark maroon foliage, and something gray too. I know nothing about your climate and what grows well for you, but a couple plants that come to mind are artemisia, rosemary, sanguisorba, yucca... more form than colour.

I don't consider that color bold at all. In fact, it looks pretty neutral and I don't think you need to worry too much about what colors you choose. I agree that a deep red rose would be nice with it.

Many color palettes would work well with your house colors. For instance, blue-grey foliage with orange might flatter the house:
{{gwi:18213}}

Or you could go with bold colors; this example is an ornamental banana, but there are cannas with bold foliage, and New Zealand flax as well:

{{gwi:27973}}

Found a pic of some NZ flax (phormium):
{{gwi:37529}}

A variety of shades and textures of green foliage would do very well with your colors. Think of dark green mixed with chartreuse and burgundy foliage, that could be fantastic. You have many choices.

You've nailed the main issue with "matching" plants to the house yourself: plants don't fly their colours all the time. They only bloom sometimes, and even foliage colours change through the season (well, maybe they don't in zone 9...?)

Anyway, short of avoiding obvious clashes I wouldn't think twice about it, just use the plants you like. The other way you might think about it, though, is using the background to highlight colours, For example, I have a tree that blooms pale yellow on bare branches in winter (Chimonanthus praecox) that I see outlined against the neighbour's burgundy house, and it looks fantastic. In front of your house, as Catkim points out, certain colours will look great.

KarinL

catkim,

I love those plants! I think they would look awesome with this house.

K4

lovely agave picture!

I'd also agree that the house colors are not bold, and you could pretty much use whatever plant combinations and colors you prefer. Given your inland LA location and the fact that you get very hot in summer, are always on the dry side, and also get strong Santa Ana winds, I would suggest that any plants your select ought to be chosen with all that in mind, and resist the worst that your location dishes out. Also, it is extremely easy to get plants that will bloom nearly all year long in this environment, and selecting plants that have intense colors to hold up to that bright LA sun is not hard to do either.

The blues of the Agave americana can easily be supplemented by other blue foliaged tough plants such as the Blue Hesper Palm/Brahea armata, or Brahea 'Clara'. The Bismarck Palm, Bismarckia nobilis in its blue/silver form could also look stunning. Other Agaves such as A. parryi would also love these conditions. If the deep red flowers appeal to you, something like the Coral Tree, Erythrina x bidwillii, which is actually more of a large shrub, and can bloom nearly 10 months of the year in southern California is going to give more impact colorwise than any rose. A deep purple-red foliage plant that would also love your heat, but is deciduous in winter, might include the Purple Smoke Bush, Cotinus coggygria 'Royal Purple'. Other shrubs such as Lantana, Tecomaria capensis in its various color forms, Tecoma x smithii, Tecoma stans can all give months of solid color under heat, drought and wind, in shades from yellows, golds, peach, orange, pink, rose, red tones.

I'd suggest staying away from things such as the bananas and the Phormiums, because both can look wind and heat stressed under dry windy inland locations, and in fact, Phormiums need some protection from hot sun to avoid bleaching and burnt foliage. Ensete ventricosum 'Maurellii' the Red Abyssinian Banana in Kim's photo will also look windwhipped in inland southern California unless grown in a very wind protected location.

A visit to the Los Angeles Arboretum or the Huntington Botanic Garden could give you lots more ideas of great plants for your location. I love the look of your Brazilian Silk Floss Tree in the front, and you could also play off the fall flowers of this tree with more hot pink/fuchsia flowers from things like Calandrinia spectabilis or Callistemon 'Cane's Hybrid' or Callistemon 'Mauve Mist'. Calliandra californica or C. tweedii, could also be quite floriferous, drought tolerant hot sun plants in your setting.